The Melongenidae, the crown conchs and their relatives, are a taxonomic family of large to very large marine gastropods in the superfamily Buccinoidea.

[1] For a while prior to 2004, the genera Busycon and Busycotypus were placed in the Melongenidae.

[2] Then, in 2004, based on their digestive systems and on cladistic analysis by Kosyan & Kantor (2004),[2] these two genera were moved to the family Busyconidae within the superfamily Buccinoidea.

According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005), the Melongenidae consists of two subfamilies: Genera in the family Melongenidae include:[3]

This Melongenidae-related article is a stub.